IRF640 vs IRF740: What is the difference?

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MOSFET Explained / Description

IRF740 is a high voltage N channel MOSFET, the transistor is basically designed for high voltage and high-speed switching applications. The max load voltage this transistor can drive is up to 400V with a maximum load current of 10A. The maximum current in pulse mode is 40A and the on-resistance or (RDS) is 0.55 ohms.

The max drain to source voltage of 400V makes it ideal to drive a variety of high voltage loads in electronic circuits.

 

IRF640 is an N Channel MOSFET designed for high-speed switching purposes. This high-speed switching capability can be very useful in applications where switching speed is crucial, for example in a UPS circuit or in any other application where the user wants to change the load input power from one source to another.

The transistor is capable of driving a load of up to 18A and the voltage can be up to 200V with the minimum saturation voltage of only 2V to 4v at its gate. The pulsed drain current is 72A means this MOSFET can drive a load of up to 72A in short intervals or when the load is not continuously connected and only connected for a 300us (Microseconds) time period with a duty cycle of 1.5%.



Where We Can Use it & How to Use: IRF640 vs IRF740


IRF640 can be used in circuits where switching speed important for example in battery backup systems, uninterruptable power supplies etc. and it will also perform well in general purpose switching applications. Other than that it can also be used in building blocks of audio amplifiers.

 

 

IRF740 can be used in circuits in which you want to drive voltage load of upto 400V with 10A load current. Also the high speed switching capability makes it suitable in applications where user requires switching from one source to another in nanoseconds.

The 400V load capability makes it suitable to use in variety of high voltage applications such as uninterrupted power supplies, LED and other light ballasts etc.

Moreover this transistor can also be used in audio amplifier circuit stages and also as a separate audio amplifier.



Circuits: IRF640 vs IRF740




Datasheet :IRF640 vs IRF740 Dowmload


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